HW-770 V0.2 is an MP3 decoder with a Bluetooth 4.1 receiver built-in. The integrated micro USB port or a battery terminal can be used to power this board. There are solder pads for the right, left, and ground wires of the speakers on the board's output, or an onboard 3.5 mm audio jack can be used to connect the speakers. It supports Wireless 5.0, automatic return function, WAV+APE+FLAC+MP3 lossless decoding and stereo output.
Specification
| Operating Voltage | 3.3V-5V DC |
| SNR | 90dB |
| THD+N | -70dB |
| Crosstalk | -86dB |
| DNR | 91dB |
| Support Profile | A2DP/AVCTP/AVDTP/AVRCP/HFP |
| Range | 15m |
| Size | 30x30x7.4mm |
| Country of Origin | China |
